The certificate was written by a special appraiser. Generally speaking, the authenticity of the certificate can only be seen through the seal and security code on the certificate. I have several certified clubs. After reading it, I found that it was not difficult to copy it. Personally, I think the most practical and useful way to identify the authenticity of the club in your hand is to verify it by yourself against the parameters on the certificate or parameter card. This is much more practical than calling to verify the security code.

First of all, of course, look at the photos and compare the wood grain.

Secondly, we can check from the weight of the shaft: some shafts are calculated by weight. One weighs 28.34 grams. After converting important units into grams, we can find an electronic scale to weigh accurately. If the error exceeds10g, it is absolutely false.

Then check the diameter of the leather head. Measure yourself over1mm. Fake goods.

Center of gravity: this is not easy to check. I made an inverted T-shaped object myself. Put the rod on the vertical side, move it to the point where both sides are balanced, make a mark, and measure the distance from the end of the rod to this point, which is the center of gravity.

Other parameters are really troublesome to check and can be ignored.

As long as the above four items are consistent, you can be absolutely sure that the pole in your hand is genuine.

If the club is fake, it can be made like this. Then you can sell it as real goods. Ha ha.